US2975375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant energy source
Assignee: TDK Micronas GmbH
•
Filing: 1952-04-16
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Granted: 1961-03-14
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Expires: 1972-04-16
Abstract
No abstract record available.
Inventors
- 👤 Goldstein Ladislas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:19
CPC Classifications
F; F03; F03H; F03H1/00; F03H1/0093; H; H01; H01J; H01J27/00; H01J27/02; H01J27/16
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |